CN105252804A - Solid material fine crushing and high pressure forming system and process - Google Patents
Solid material fine crushing and high pressure forming system and process Download PDFInfo
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- CN105252804A CN105252804A CN201510715078.6A CN201510715078A CN105252804A CN 105252804 A CN105252804 A CN 105252804A CN 201510715078 A CN201510715078 A CN 201510715078A CN 105252804 A CN105252804 A CN 105252804A
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Abstract
The invention provides a solid material fine crushing and high pressure forming system and process. The system comprises a feed valve for receiving bulk materials and a fine crusher communicated with the feed valve, wherein the lower portion of the fine crusher is communicated with a fine powder buffer bin; a first discharging valve is arranged on the lower portion of the fine powder buffer bin; the lower portion of the first discharging valve is communicated with a forming machine feeding screw; the discharging outlet of the forming machine feeding screw is communicated with the feeding inlet of a forming machine prepressing screw; the discharging outlet of the forming machine prepressing screw is connected to a high pressure double-roll forming machine; a forming machine discharging belt and a vibrating screen classifier connected with the forming machine discharging belt are arranged below the outlet of the high pressure double-roll forming machine; one outlet of the vibrating screen classifier is connected with a transfer belt for outputting formed products, and the other outlet is provided with a third discharging valve communicated with an embedded scraper transporter for sending materials not formed back to the feed valve. The system and process combine and integrate materials screening, fine crushing and forming procedures, the pre-extrusion process is included to exhaust gas, and the defects like bubbles and gas explosion are avoided.
Description
Technical field
The present invention relates to the fragmentation of a kind of material and molding equipment, especially a kind of for the in small, broken bits of bulk materials and formation system and technique.
Background technology
At present, a large amount of efflorescence or solid small particles material is there is in industries such as chemical industry, building materials, electric power, such as low-rank coal, moisture-free coal, semicoke, lime-ash, spoil etc., this kind of material needs to carry out forming processes usually, so that further processing and utilization and long-distance sand transport.Current forming technique is mainly divided into shaping and shaping two kinds of the binder free of binding agent.Wherein have binding agent molding adhesive alternative condition harshness, consumption large, shaping cost is higher, mainly in the field application that added value of product is higher.The shaping granularity to material of binder free, temperature, moisture and briquetting pressure require strict.Current most of moulder inlet raw meal particle size is greater than 3mm, forming temperature is close to normal temperature, and the ceiling for accumulation pressure of forming machine is only about 150kN/cm, shaped article cold pressing strength, immersion intensity, calorific intensity, heat endurance all cannot reach requirement, cannot meet subsequent technique needs.
Summary of the invention
The invention provides a kind of material in small, broken bits and formation system and technique, large to solve raw meal particle size in prior art, forming machine pressure is low, and forming temperature can not adjust the problem of caused molding effect difference.
In small, broken bits and the high-pressure molding system of a kind of solid material, comprise the inlet valve receiving bulk material, the fine crusher be communicated with inlet valve, described fine crusher has the adjustable screen drum of gap, fine crusher bottom is communicated with fine powder surge bunker, fine powder surge bunker bottom is provided with the first discharge valve, forming machine feeding serew is communicated with below described first discharge valve, the discharging opening of described forming machine feeding serew is communicated with the charging aperture of forming machine pre-pressing spiral, the discharging opening of forming machine pre-pressing spiral is connected to high-voltage double-roller forming machine, the vibrating screen classifier that described high-voltage double-roller forming machine outlet below is provided with forming machine outfeed belt and is attached thereto, vibrating screen classifier one outlet is connected with the transhipment belt exported by shaped article, another outlet is provided with the 3rd discharge valve, non-molding materials sends inlet valve back to through the 3rd discharge valve and embedded scraper transporter.
Further, described fine powder surge bunker top is connected with pressure balance pipeline, according to handled material properties, by regulating pressure balance pipeline valve opening and dedusting air-introduced machine inlet valve aperture, thus regulates surge bunker operating pressure.If process inflammable and explosive material, then use nitrogen to make surge bunker keep pressurized operation, if process common material, then make surge bunker keep tiny structure to run to save tolerance.In addition, surge bunker top is provided with the first deduster, and described first deduster is connected respectively to dedusting air-introduced machine and the first nitrogen blowback pipeline.
Be provided with bottom described fine powder surge bunker and add fluidized hot pipeline along the oblique layout of feed bin quadrangle tangential circle.
Further, the second deduster is provided with between described pre-pressing spiral and vacuum air pump, described second deduster top is connected with the second nitrogen blowback pipeline, and lower part outlet is provided with the second discharge valve, and the outlet of described second discharge valve is connected with embedded scraper transporter.
Especially, described inlet valve, the first discharge valve, the second discharge valve are star-shaped discharge valve.
Especially, described forming machine feeding serew and forming machine pre-pressing spiral are variable-pitch auger, and to make granular material form consolidation material envelope in spiral outlet space, and described pre-pressing spiral is connected with vacuum air pump.
Further, described high-voltage double-roller forming machine discharging opening is connected with nitrogen fire main.
Further, described high-voltage double-roller forming machine is actuated to make its linear pressure reach 300kN/cm-500kN/cm by hydraulic oil pump.
Further, described solid material is in small, broken bits also comprises nitrogen heater with high pressure forming device.
Use the in small, broken bits and high pressure forming device of solid material to carry out the technique of the in small, broken bits and high-pressure molding of solid material, comprise the steps:
1) throw in into inlet valve by solid material, material obtains 0-3mm particle diameter fine powder after the fine crusher fragmentation be connected with inlet valve;
2) fine powder enters forming machine feeding serew and pre-pressing spiral Exhaust Gas after surge bunker;
3) fine powder after Exhaust Gas is admitted to high-pressure forming machine, and the material after high-pressure molding is transported to vibrating screen classifier screening through outfeed belt;
4) shaped article is by transhipment Belt Conveying to stock ground, and non-molding materials turns back to inlet valve by embedded scraper transporter, and the fine powder that the second deduster sieves out in addition falls into embedded scraper transporter returning charge through the second discharge valve.
The invention has the beneficial effects as follows: material screens by this system, in small, broken bits and molding procedure combination [u1] is integrated, regulate material particular diameter, temperature, discharge gas between powder, reach best condition of molding, the pore structure of material particles inside is destroyed, by material to realize binder free shaping in being extruded rear produced viscosity by high-pressure molding.This technological forming product have intensity high, not easily relapse, the features such as gas explosion do not occur, expand bulk materials processing and utilization scope, increase long-distance transport efficiency and greatly improve the safety and stability performance of material.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the in small, broken bits and high pressure forming device syndeton schematic diagram of solid material of the present invention;
Fig. 2 is surge bunker schematic cross-section of the present invention.
Reference numeral: 1-inlet valve, 2-fine crusher, 3-fine powder surge bunker, 4-first deduster, 5-dedusting air-introduced machine, 6-first discharge valve, 7-feeding serew, 8-pre-pressing spiral, 9-high-voltage double-roller forming machine, 10-second deduster, 11-second discharge valve, 12-vacuum air pump, 13-hydraulic oil container, 14-hydraulic oil pump, 15-forming machine outfeed belt, 16-vibrating screen classifier, 17-transports belt, 18-the 3rd discharge valve, 19-embedded scraper transporter, 20-nitrogen heater, 21-first nitrogen blowback pipeline, 22-pressure balance pipeline, 23-adds fluidized hot pipeline, 24-second nitrogen blowback pipeline, 25-nitrogen fire main.
Detailed description of the invention
With reference to figure 1, in small, broken bits and the high-pressure molding system of a kind of solid material, comprise the inlet valve 1 receiving bulk material, the fine crusher 2 be communicated with inlet valve, fine crusher bottom is communicated with fine powder surge bunker 3, fine powder surge bunker bottom is provided with the first discharge valve 6, forming machine feeding serew 7 is communicated with below described first discharge valve, the discharging opening of described forming machine feeding serew is communicated with the charging aperture of forming machine pre-pressing spiral 8, the discharging opening of forming machine pre-pressing spiral is connected to high-voltage double-roller forming machine 9, the vibrating screen classifier 16 that described high-voltage double-roller forming machine outlet below is provided with forming machine outfeed belt 15 and is attached thereto, vibrating screen classifier one outlet is connected with the transhipment belt 17 exported by shaped article, another outlet is provided with the 3rd discharge valve 18, non-molding materials sends inlet valve 1 back to through the 3rd discharge valve and embedded scraper transporter 19.
Especially, described fine crusher 2 is " sieving broken one " equipment, can change 1-3mm metal screen drum respectively according to material properties, ensures that entrance particle diameter is not more than 50mm, and the bulk materials that water content is not more than 10% disposablely passes through fine crusher.In order to ensure high-pressure molding quality, require that shaping front material particular diameter is not more than 3mm.And fine crusher screen drum gap is adjustable, by adjusting play, make the fine powder of 0-3mm particle diameter enter fine powder surge bunker 3 by fine crusher, the material being greater than 3mm particle diameter continues to stay in fine crusher again in small, broken bits.Can guarantee that the material particular diameter from fine crusher outlet all meets the technological requirement of 0-3mm like this.
Described fine powder surge bunker 3 top is connected with pressure balance pipeline 22, according to handled material properties, by regulating pressure balance pipeline 22 valve opening and dedusting air-introduced machine 5 inlet valve aperture, thus regulates the operating pressure of surge bunker 3.If process inflammable and explosive material, then use nitrogen to make surge bunker 3 keep pressurized operation, if process common material, then make surge bunker 3 keep tiny structure to run to save tolerance.Surge bunker top is provided with the first deduster 4, first deduster and can be sack cleaner or metal filter cylinders deduster.Described first deduster is connected respectively to dedusting air-introduced machine 5 and the first nitrogen blowback pipeline 21.Waste gas is entered outside atmosphere by described dedusting air-introduced machine, and the first nitrogen blowback pipeline, for being blown off by the powder be adsorbed on the first deduster, prevents blocking.
With reference to figure 1 and Fig. 2, be provided with bottom described fine powder surge bunker 3 and add fluidized hot pipeline 23, for regulating shaping front temperature of charge and playing the anti-blocking and dredging effect bottom to surge bunker by the winding-up of gases at high pressure along the oblique layout of feed bin quadrangle tangential circle.
Continue with reference to figure 1, be provided with the second deduster 10 between described pre-pressing spiral and vacuum air pump 12, described second deduster top is connected with the second nitrogen blowback pipeline 24, for being blown off by the powder of the second deduster absorption, prevents blocking.Second deduster lower part outlet is provided with the second discharge valve 11, and the outlet of described second discharge valve is connected with embedded scraper transporter 19.
Preferably, described inlet valve 1, first discharge valve 6, second discharge valve 11 is star-shaped discharge valve.
Described forming machine feeding serew 7 and forming machine pre-pressing spiral 8 are variable-pitch auger, and to make granular material form consolidation material envelope in spiral outlet space, and described pre-pressing spiral is connected with vacuum air pump 12.The highest about 100kPa vacuum environment is set up like this under pre-pressing spiral 8 forms bottom material envelope, feeding serew 7 formation outlet material envelope and vacuum air pump 12 acting in conjunction, fully the air in powder in pre-pressing spiral 8 is discharged, prevent high-pressure molding aftershaping product generation gas explosion phenomenon.
Described high-voltage double-roller forming machine 9 discharging opening is connected with nitrogen fire main 25.When being applicable to the process flammable materials such as moisture-free coal, semicoke, forming machine outlet fire-fighting.
Described first nitrogen blowback pipeline 21, pressure balance pipeline 22, add the source of the gas that fluidized hot pipeline 23, second nitrogen blowback pipeline 24 uses and can change according to the difference for the treatment of product.Can be nitrogen, also can be compressed air.Wherein the first nitrogen blowback pipeline and the second nitrogen blowback pipeline minimum pressure are 0.3MPa.In order to meet technological temperature environmental requirement, also can comprise nitrogen heater 20 with regulate temperature such as by the heating material after in small, broken bits to forming requirements temperature, to ensure shaping strength.
Described high-voltage double-roller forming machine 9 is actuated by hydraulic oil pump 14, and its linear pressure need reach 300kN/cm-500kN/cm.Be made as shaped article at this kind of pressure, formed product rate can reach 80%.
Use the in small, broken bits and high pressure forming device of solid material to carry out the technique of the in small, broken bits and high-pressure molding of solid material, comprise the steps:
1) thrown in by solid material into inlet valve 1, material obtains 0-3mm particle diameter fine powder after fine crusher 2 fragmentation be connected with inlet valve;
2) fine powder enters forming machine feeding serew 7 after surge bunker 3, pre-pressing spiral 8 is entered subsequently from feeding serew outlet, under feeding serew, pre-pressing spiral and empty aspiration pump 12 acting in conjunction, form the highest about 100kPa vacuum environment, fully the air in powder in pre-pressing spiral 8 is discharged;
3) fine powder after Exhaust Gas is admitted to high-pressure forming machine 9 and carries out high-pressure molding, and the material after shaping is transported to vibrating screen classifier 16 through outfeed belt 15 and screens, and sieves out shaped article and not shaping powdery, lump material.
4) shaped article is transported to stock ground by transhipment belt 17, non-molding materials turns back to inlet valve by the 3rd discharge valve 18 and embedded scraper transporter 19 and again processes, and the fine powder that the second deduster sieves out in addition falls into embedded scraper transporter 19 returning charge through the second discharge valve.
Especially, this technique applicability is wider, take into full account the factor affecting molding effect: material particular diameter, temperature, moisture and briquetting pressure etc., best molding effect condition can be determined according to handled bulk materials character by several times test, change slightly be done to native system and can realize suitability for industrialized production.It is below several variant embodiment of the present invention.
When native system is applied to moisture-free coal, semicoke moulding process, supplied materials temperature meets forming requirements, and therefore nitrogen heater 20 is without the need to continuous unlatching, only does the use of temperature adjustment.For ensureing security performance, auxiliary source of the gas can adopt nitrogen, makes fine powder surge bunker 3 keep nitrogen environment operation under positive pressure, and the first deduster 4, second deduster 10 can use fire-resistant metal filter cylinders deduster, in addition, can set up 25 nitrogen fire mains in forming machine outlet.
When native system is applied to the nonflammable moulding process such as lime-ash, adding fluidized hot pipeline 23 flow by regulating, making raw material meet forming temperature.For reducing operating cost, auxiliary source of the gas adopts compressed air, and make fine powder surge bunker 3 keep negative pressure to run, the first deduster 4, second deduster 10 can use cheap sack cleaner.In addition, forming machine outlet nitrogen fire main 25 also can be cancelled.
Native system can change technological parameter according to material properties, such as by the shaping front particle diameter of screen drum gap adjustable of adjustment fine crusher 2, adjust heating-up temperature by nitrogen heater 20, regulate briquetting pressure etc. by hydraulic oil container 13 and hydraulic oil pump 14, thus select Optimal technique process to process.
To solid material of the present invention, in small, broken bits and high-pressure molding system and technique specifically describe above content, and in conjunction with the accompanying drawings, but the invention is not restricted to detailed description of the invention described above, all carry out according to technical essential of the present invention any improvement, equivalent modifications and replacement etc., all within the scope of the appended claims.
Claims (10)
1. the in small, broken bits and high-pressure molding system of a solid material, comprise the inlet valve (1) receiving bulk material, the fine crusher (2) be communicated with inlet valve, described fine crusher has the adjustable screen drum of gap, fine crusher bottom is communicated with fine powder surge bunker (3), fine powder surge bunker bottom is provided with the first discharge valve (6), forming machine feeding serew (7) is communicated with below described first discharge valve, the discharging opening of described forming machine feeding serew is communicated with the charging aperture of forming machine pre-pressing spiral (8), the discharging opening of forming machine pre-pressing spiral is connected to high-voltage double-roller forming machine (9), the vibrating screen classifier (16) that described high-voltage double-roller forming machine outlet below is provided with forming machine outfeed belt (15) and is attached thereto, vibrating screen classifier one outlet is connected with the transhipment belt (17) exported by shaped article, another outlet is provided with the 3rd discharge valve (18), non-molding materials sends inlet valve (1) back to through the 3rd discharge valve and embedded scraper transporter (19).
2. the in small, broken bits and high-pressure molding system of solid material according to claim 1, it is characterized in that, described fine powder surge bunker (3) top is connected with pressure balance pipeline (22), its top is provided with the first deduster (4), and described first deduster is connected respectively to dedusting air-introduced machine (5) and the first nitrogen blowback pipeline (21).
3. the in small, broken bits and high-pressure molding system of solid material according to claim 1, is characterized in that, described fine powder surge bunker (3) bottom is provided with and adds fluidized hot pipeline (23) along the oblique layout of feed bin quadrangle tangential circle.
4. the in small, broken bits and high-pressure molding system of solid material according to claim 1, it is characterized in that, the second deduster (10) is provided with between described pre-pressing spiral and vacuum air pump (12), described second deduster top is connected with the second nitrogen blowback pipeline (24), lower part outlet is provided with the second discharge valve (11), and the outlet of described second discharge valve is connected with embedded scraper transporter (19).
5. the in small, broken bits and high-pressure molding system of solid material according to claim 4, it is characterized in that, described inlet valve (1), the first discharge valve (6), the second discharge valve (11) are star-shaped discharge valve.
6. the in small, broken bits and high-pressure molding system of solid material according to claim 1, it is characterized in that, described forming machine feeding serew (7) and forming machine pre-pressing spiral (8) are variable-pitch auger, to make granular material form consolidation material envelope in spiral outlet space, and described pre-pressing spiral is connected with vacuum air pump (12).
7. the in small, broken bits and high-pressure molding system of solid material according to claim 1, it is characterized in that, described high-voltage double-roller forming machine (9) discharging opening is connected with nitrogen fire main (25).
8. the in small, broken bits and high-pressure molding system of solid material according to claim 1, it is characterized in that, described high-voltage double-roller forming machine (9) is actuated to make its linear pressure reach 300kN/cm-500kN/cm by hydraulic oil pump (14).
9. the in small, broken bits and high-pressure molding system of the solid material according to any one of claim 2-5, is characterized in that, also comprise nitrogen heater (20).
10. use the in small, broken bits and high-pressure molding system of the solid material described in any one of claim 1-9 to carry out the technique of the in small, broken bits and high-pressure molding of solid material, comprise the steps:
1) thrown in by solid material into inlet valve (1), material obtains 0-3mm particle diameter fine powder after fine crusher (2) fragmentation be connected with inlet valve;
2) fine powder enters forming machine feeding serew (7) and pre-pressing spiral (8) Exhaust Gas after surge bunker (3);
3) fine powder after Exhaust Gas is admitted to high-pressure forming machine (9), and the material after high-pressure molding is transported to vibrating screen classifier (16) screening through outfeed belt (15);
4) shaped article is transported to stock ground by transhipment belt (17), and non-molding materials turns back to inlet valve by embedded scraper transporter (19), and the fine powder that the second deduster (10) sieves out in addition falls into embedded scraper transporter returning charge through the second discharge valve (11).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110385779A (en) * | 2018-04-23 | 2019-10-29 | 严瑞山 | A kind of dry powder compound stalk forming device |
| CN111231402A (en) * | 2020-01-19 | 2020-06-05 | 四川中益金能新材料科技有限公司 | Ball press adjustable device |
| CN113147071A (en) * | 2021-04-01 | 2021-07-23 | 黄思昕 | Environment-friendly solid garbage compression treatment device and use method thereof |
| CN114040808A (en) * | 2019-03-13 | 2022-02-11 | 梅托克斯技术公司 | Solid precursor feed system for thin film deposition |
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| CN110385779A (en) * | 2018-04-23 | 2019-10-29 | 严瑞山 | A kind of dry powder compound stalk forming device |
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